Gratinee Lyonnaise Lyon Style Onion Soup

Dive into the cozy, rich flavors of Gratinee Lyonnaise, a Lyon-style onion soup that takes comfort food to gourmet heights. This French classic starts with caramelized yellow onions, lovingly cooked in butter and olive oil until golden and sweet. A touch of dry white wine, aromatic thyme, and a hearty beef stock infuse the soup with depth, while toasted baguette slices and a blanket of bubbling, golden Gruyère cheese turn it into a culinary masterpiece. Perfect for chilly evenings or indulgent dinner parties, this gratinée is broiled to perfection in oven-safe bowls for a show-stopping presentation. Savor the irresistible marriage of textures—silky soup, crunchy bread, and gooey cheese—in every comforting spoonful.

Nutriscore Rating: 65/100

Prep Time:15 mins

Cook Time:50 mins

Total Time:65 mins

Servings: 6

Ingredients

• 3 tablespoons Unsalted butter
• 1 tablespoon Olive oil
• 6 cups Yellow onions (thinly sliced)
• 1 teaspoon Granulated sugar
• 2 tablespoons All-purpose flour
• 6 cups Beef stock
• 1 cup Dry white wine
• 1 Bay leaf
• 1 sprig Fresh thyme (or 1/2 teaspoon dried thyme)
• 1 teaspoon Salt
• 0.5 teaspoon Freshly ground black pepper
• 12 French bread or baguette (cut into slices)
• 2 cups Gruyère cheese (grated)

Directions

Step 1

Heat a large, heavy-bottomed pot over medium heat. Add the butter and olive oil, allowing the butter to melt completely.

Step 2

Add the sliced onions to the pot and stir to coat them in the butter and oil.

Step 3

Sprinkle the sugar over the onions. Cook the onions, stirring occasionally, for 25-30 minutes until they are golden brown and caramelized.

Step 4

Add the flour to the caramelized onions and stir to coat. Cook for 2 minutes to remove the raw flour taste.

Step 5

Gradually add the beef stock while stirring to deglaze the pot and incorporate the flour mixture smoothly.

Step 6

Pour in the white wine, then add the bay leaf and thyme sprig. Season with salt and freshly ground black pepper. Bring the soup to a simmer, then reduce the heat and cook for 10 minutes.

Step 7

While the soup is simmering, preheat the oven’s broiler. Place the French bread slices on a baking sheet and toast them under the broiler for 1-2 minutes on each side, or until golden.

Step 8

Ladle the soup into oven-safe bowls. Place a slice or two of toasted bread on top of each bowl, then generously sprinkle grated Gruyère cheese over the bread.

Step 9

Place the bowls under the broiler for 2-3 minutes, or until the cheese is melted and bubbling.

Step 10

Carefully remove the bowls from the broiler, and serve the soup hot. Enjoy!

Nutrition Facts

Serving size	(3263.9g)

Amount per serving	% Daily Value*
Calories	3489.2

Total Fat 138.3g	0%
Saturated Fat 67.4g	0%
Polyunsaturated Fat 1.5g
Cholesterol 333mg	0%
Sodium 12359.5mg	0%
Total Carbohydrate 402.4g	0%
Dietary Fiber 28.3g	0%
Total Sugars 54.4g
Protein 140.3g	0%

Vitamin D 48IU	0%
Calcium 2554.1mg	0%
Iron 24.2mg	0%
Potassium 2897.5mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 36.4%

Protein: 16.4%

Carbs: 47.1%